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发明名称
PROTECTION OF PORTLAND CEMENT FROM CONTAMINANTS
摘要
申请公布号
CA740493(A)
申请公布日期
1966.08.09
申请号
CAD740493
申请日期
申请人
GULF OIL CORPORATION
发明人
HORACE J. BEACH
分类号
主分类号
代理机构
代理人
主权项
地址
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